CLGeocoder 不工作

Posted 2023-03-05

【中文标题】CLGeocoder 不工作

【英文标题】：CLGeocoder not working

【发布时间】：2012-09-07 06:20:29

【问题描述】：

- (BOOL)application:(UIApplication *)application didFinishLaunchingWithOptions:(NSDictionary *)launchOptions     

    // Override point for customization after app launch    
    [window addSubview:viewController.view];
    [window makeKeyAndVisible];

    [window addViewForTouchPriority:viewController.view];

    if(self.locationManager==nil)
        locationManager=[[CLLocationManager alloc] init];

        locationManager.delegate=self;
        locationManager.purpose = @"We will try to tell you where you are if you get lost";
        locationManager.desiredAccuracy=kCLLocationAccuracyBest;
        locationManager.distanceFilter=500;
        self.locationManager=locationManager;
    
    geoCoder = [[CLGeocoder alloc] init];

    if([CLLocationManager locationServicesEnabled])
        [self.locationManager startUpdatingLocation];          
    

    return YES;


-(void)locationManager:(CLLocationManager *)manager didUpdateToLocation:(CLLocation *)newLocation fromLocation:(CLLocation *)oldLocation

    lati = [[NSString alloc] initWithFormat:@"%+.6f", newLocation.coordinate.latitude];
    NSLog(@"address:%@",lati);

    longi = [[NSString alloc] initWithFormat:@"%+.6f", newLocation.coordinate.longitude];
    NSLog(@"address:%@",longi);

    CLLocationCoordinate2D coord;
    coord.latitude = [lati doubleValue];
    coord.longitude = [longi doubleValue];


    [geoCoder reverseGeocodeLocation: newLocation completionHandler: ^(NSArray *placemarks, NSError *error)
     

         //Get nearby address
         CLPlacemark *placemark = [placemarks objectAtIndex:0];

         //String to hold address
         NSString *locatedAt = [[placemark.addressDictionary valueForKey:@"FormattedAddressLines"] componentsJoinedByString:@", "];

         //Print the location to console
         NSLog(@"I am currently at %@",locatedAt);

         address = [[NSString alloc]initWithString:locatedAt];    
         NSLog(@"address:%@",address);
     ];

我使用上面的代码通过给出纬度和经度来获取地址，但控制没有进入地理编码器方法，它跳过它。谁能帮帮我。

提前致谢。

【参考方案1】：

没关系，控件没有进入方法中，但是可以工作，注意输出它会工作。

【参考方案2】：

这很正常，因为 reverseGeocodeLocation 内的代码是在块内执行的。 块内代码的执行发生在另一个线程中，因此不在主线程中执行，这就是控件不进入geocoder方法内部的原因。